skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Progress with the COGENT Edge Kinetic Code: Collision operator options

Journal Article · · Contributions to Plasma Physics
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [3];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of California, San Diego, La Jolla, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
+ Show Author Affiliations

In this study, COGENT is a continuum gyrokinetic code for edge plasmas being developed by the Edge Simulation Laboratory collaboration. The code is distinguished by application of the fourth order conservative discretization, and mapped multiblock grid technology to handle the geometric complexity of the tokamak edge. It is written in v∥-μ (parallel velocity – magnetic moment) velocity coordinates, and making use of the gyrokinetic Poisson equation for the calculation of a self-consistent electric potential. In the present manuscript we report on the implementation and initial testing of a succession of increasingly detailed collision operator options, including a simple drag-diffusion operator in the parallel velocity space, Lorentz collisions, and a linearized model Fokker-Planck collision operator conserving momentum and energy (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1248305
Report Number(s):
LLNL-JRNL-517732
Journal Information:
Contributions to Plasma Physics, Vol. 52, Issue 5-6; ISSN 0863-1042
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

References (8)

Progress in Kinetic Simulation of Edge Plasmas journal March 2008
Transition from Pastukhov to collisional confinement in a magnetic and electrostatic well journal August 1980
TEMPEST simulations of the plasma transport in a single-null tokamak geometry journal May 2010
A limiter for PPM that preserves accuracy at smooth extrema journal July 2008
Gyrokinetic particle simulation of neoclassical transport journal August 1995
Nonlinear gyrokinetic equations for turbulence in core transport barriers journal December 1996
High-order, finite-volume methods in mapped coordinates journal April 2011
Linearized model Fokker–Planck collision operators for gyrokinetic simulations. I. Theory journal December 2008

Cited By (4)

Kinetic Simulation of Collisional Magnetized Plasmas with Semi-implicit Time Integration journal May 2018
Simulation of neoclassical transport with the continuum gyrokinetic code COGENT journal January 2013
Continuum kinetic modeling of the tokamak plasma edge journal May 2016
Kinetic Simulation of Collisional Magnetized Plasmas with Semi-Implicit Time Integration preprint January 2017

Similar Records

Progress with the COGENT Edge Kinetic Code: Implementing the Fokker-Plank Collision Operator
Journal Article · Fri Jun 20 00:00:00 EDT 2014 · Contributions to Plasma Physics · OSTI ID:1248305
+2 more
Multi-Fluid Modeling of Low-Recycling Divertor Regimes
Conference · Fri Jan 01 00:00:00 EST 2010 · OSTI ID:1248305
+8 more
Simulation of neoclassical transport with the continuum gyrokinetic code COGENT
Journal Article · Tue Jan 15 00:00:00 EST 2013 · Physics of Plasmas · OSTI ID:1248305
+6 more

Related Subjects

70 PLASMA PHYSICS AND FUSION
97 MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
edge
plasma
simulation
kinetic
gyrokinetic